http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CA-1134519-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_44f82521bd7b49adba4be2e3e4f3b66a |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H04L27-26524 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H04L27-2654 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H04L27-2634 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H04J4-005 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H04L27-26414 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H04L27-26 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H04J4-00 |
| filingDate | 1980-02-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1982-10-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f88654f237aa903b050d47760cc347d3 |
| publicationDate | 1982-10-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CA-1134519-A |
| titleOfInvention | Transmitter and receiver for an orthogonally multiplexed qam signal of a sampling rate n times that of pam signals, comprising an n/2-point offset fourier transform processor |
| abstract | Abstract of the Disclosure: In a transmitter for digitally converting PAM signals, 2L in number, of a common slow sampling rate of 1/T hertzes to an orthogonally multiplexed QAM signal of a fast sampling rate of N/T hertzes, N/2-point input data into which the PAM signals are pre-processed with addition thereto of dummy signals, only (N/2 - L) in number, are supplied to at least one N/2-point ODFT (offset discrete Fourier transform) processor (61), a pair of which (61, 62) must have been an N-point OFDT processor accompanied by switches controlled at a T/2-second period. After caused to pass through respective filter units of a bank (71). N/2-point output data are time-division multiplexed into the QAM signal. The filter units may either be complex band-pass or real low-pass filter units. A receiver comprises similar parts and carries out entirely reversed operation. |
| priorityDate | 1979-02-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 47.